11423903 has 4 divisors (see below), whose sum is σ = 11792448. Its totient is φ = 11055360.

The previous prime is 11423899. The next prime is 11423911. The reversal of 11423903 is 30932411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11423903 - 2² = 11423899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184226 + ... + 184287.

It is an arithmetic number, because the mean of its divisors is an integer number (2948112).

Almost surely, 2^11423903 is an apocalyptic number.

11423903 is a deficient number, since it is larger than the sum of its proper divisors (368545).

11423903 is an equidigital number, since it uses as much as digits as its factorization.

11423903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368544.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 11423903 is about 3379.9264784903. The cubic root of 11423903 is about 225.2189013662.

The spelling of 11423903 in words is "eleven million, four hundred twenty-three thousand, nine hundred three".